/Engine/Plugins/Runtime/Metasound/Source/MetasoundEditor/Public/MetasoundEditorSubsystem.h
The subsystem in charge of editor MetaSound functionality
[UCLASS](Programming/UnrealArchitecture/Reference/Classes#classdeclaration)() class UMetaSoundEditorSubsystem : public [UEditorSubsystem](API\Editor\EditorSubsystem\UEditorSubsystem)